Heat exchanger

Patent metadata

Field	Value
Publication number	US-10690419-B2
Application number	US-201816160367-A
Country	US
Kind code	B2
Filing date	Oct 15, 2018
Priority date	Oct 17, 2017
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A heat exchanger includes a peripheral wall having a polygonal tube shape and partition walls that divide an inside of the peripheral wall into first cells and second cells, the first cells and the second cells extending in an axial direction of the peripheral wall. Ends of each of the first cells in the axial direction are sealed and adjacent ones of the first cells are in communication with one another so that the first cells constitute a first passage having a U-shaped cross section perpendicular to the axial direction. The first passage includes an inflow port and an outflow port that are open in the same surface of the peripheral wall. Each of the second cells constitutes a second passage including an inflow port and an outflow port provided respectively at ends of each of the second cells in the axial direction.

First claim

What is claimed is:

1. A heat exchanger, comprising:
a peripheral wall having a polygonal tube shape; and
partition walls that divide an inside of the peripheral wall into first cells and second cells, the first cells and the second cells extending in an axial direction of the peripheral wall, wherein
ends of each of the first cells in the axial direction are sealed and adjacent ones of the first cells are in communication with one another so that the first cells constitute a first passage having a U-shaped cross section perpendicular to the axial direction, the first passage comprising an inflow port and an outflow port that are open in the same surface of the peripheral wall,
each of the second cells constitutes a corresponding second passage, the second passages each comprising an inflow port and an outflow port provided respectively at ends of each of the second cells in the axial direction, and
heat is exchanged between a first fluid flowing through the first passage and a second fluid flowing through the second passages.

2. The heat exchanger according to claim 1 , wherein
at least two of the first passages are nested in the cross section perpendicular to the axial direction, and
at least two of the second passages are arranged between adjacent two of the nested first passages.

3. The heat exchanger according to claim 2 , wherein a flow direction of the first fluid is the same in the adjacent two of the nested first passages.

4. The heat exchanger according to claim 2 , wherein at least two of the first passages have different flow rates of the first fluid flowing therethrough.

5. The heat exchanger according to claim 1 , wherein at least one of the inflow port and the outflow port is divided into segments in each of the first passages.

6. The heat exchanger according to claim 1 , comprising a passage member configured to supply and discharge the first fluid to and from the first passage.

7. The heat exchanger according to claim 1 , wherein
the first passage comprises parallel first passages arranged in a parallel manner in the cross section perpendicular to the axial direction, and
at least two of the second passages are arranged between adjacent two of the parallel first passages.

8. The heat exchanger according to claim 1 , wherein the peripheral wall has a cross-sectional polygonal shape of a quadrilateral.

9. The heat exchanger according to claim 1 , wherein each of the second cells has a cross-sectional polygonal shape of a hexagon.

Assignees

• Toyota Motor Co Ltd

Inventors

• Koga Yoshihiro
• Murata Toshio

Classifications

• F28F21/04

  of ceramic; of concrete; of natural stone · CPC title

• F28F7/02 Primary

  Blocks traversed by passages for heat-exchange media {(F28D7/0008 takes precedence)} · CPC title

• F28D21/0003 Primary

  the heat being recuperated from exhaust gases (F28D21/0014 takes precedence) · CPC title

• F28D7/0066

  Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids (F28D7/103 takes precedence) · CPC title

• F28F2220/00

  Closure means, e.g. end caps on header boxes or plugs on conduits · CPC title